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33 Commits

Author SHA1 Message Date
Ted Kremenek
7cac5a8369 Add BumpPtrAllocator::getTotalMemory() to allow clients to query how much memory a BumpPtrAllocator allocated. 
llvm-svn: 129727
 2011-04-18 22:44:46 +00:00
Michael J. Spencer
d5ec932c3a Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00
Benjamin Kramer
3f7e313552 Grow BumpPtrAllocator's slab size dynamically if we allocated many slabs. This 
reduces the amount of malloc calls and may reduce memory overhead.

Some numbers:
ASTContext stats, clang -cc1 -disable-free -fsyntax-only Cocoa_h.m
without dynamic growth                          |  with dynamic growth
Number of memory regions: 3158                  |  Number of memory regions: 432
Bytes used: 12333185                            |  Bytes used: 12333185
Bytes allocated: 12935168                       |  Bytes allocated: 12800000
Bytes wasted: 601983 (includes alignment, etc)  |  Bytes wasted: 466815 (includes alignment, etc)

ASTContext stats, clang -cc1 -disable-free -fsyntax-only on clang's ASTReader.cpp
without dynamic growth                          |  with dynamic growth
Number of memory regions: 10987                 |  Number of memory regions: 551
Bytes used: 42910356                            |  Bytes used: 42910356
Bytes allocated: 45002752                       |  Bytes allocated: 44711936
Bytes wasted: 2092396 (includes alignment, etc) |  Bytes wasted: 1801580 (includes alignment, etc)

llvm-svn: 115151
 2010-09-30 16:18:28 +00:00
Benjamin Kramer
a4c5712b41 BumpPtrAllocator::Reset() doesn't need to allocate anything. (Thanks, Jakob) 
llvm-svn: 101138
 2010-04-13 16:38:06 +00:00
Benjamin Kramer
4ca6d372d5 Let BumpPtrAllocator lazily allocate the first slab. 
We have some code in llvm and clang where a BumpPtrAllocator is declared in a
class but never used in the common case. Stop wasting memory there.

llvm-svn: 101130
 2010-04-13 14:41:51 +00:00
Benjamin Kramer
4b94ce229d Introduce SpecificBumpPtrAllocator, a wrapper for BumpPtrAllocator which allows 
only a single type of object to be allocated. Use it to make VNInfo destruction
typesafe.

llvm-svn: 99919
 2010-03-30 20:16:45 +00:00
Torok Edwin
df7c52143e Reapply r99881 with some fixes: only call destructor in releaseMemory! 
llvm-svn: 99883
 2010-03-30 11:17:48 +00:00
Torok Edwin
0994bb75ce Revert 99881, it brooke smooshlab's llvm-gcc-i386-darwin9. 
llvm-svn: 99882
 2010-03-30 10:25:08 +00:00
Torok Edwin
24db267b1e Introduce another Reset() method in BumpPtrAllocator that calls a destructor 
on all objects it has allocated, if they are all of the same size and alignment.
Use this to destruct all VNInfos allocated in LiveIntervalAnalysis (PR6653).

valnos is not reliable for this purpose, as seen in r99400
(which still leaked, and sometimes caused double frees).

llvm-svn: 99881
 2010-03-30 10:08:26 +00:00
Bill Wendling
921cd93e85 Temporarily revert r93581. It was causing failures in the ExecutionEngine tests 
on the build bots.

llvm-svn: 93606
 2010-01-16 01:06:58 +00:00
Ted Kremenek
bb1779e022 BumpPtrAllocator: Have the DefaultSlabAllocator created at runtime, not initialization time. This removes one of the 'init_constructors' reported in <rdar://problem/7545356>. 
llvm-svn: 93581
 2010-01-15 23:29:34 +00:00
Chandler Carruth
766362c707 Move DataTypes.h to include/llvm/System, update all users. This breaks the last 
direct inclusion edge from System to Support.

llvm-svn: 85086
 2009-10-26 01:35:46 +00:00
Evan Cheng
3044911225 Make sure the memory range is writable before memset'ing it. 
llvm-svn: 81308
 2009-09-09 01:45:24 +00:00
Reid Kleckner
b159a2bad6 Added a test and fixed a bug in BumpPtrAllocator relating to large alignment 
values.  Hopefully this fixes PR4622.

llvm-svn: 77088
 2009-07-25 21:26:02 +00:00
Daniel Dunbar
5895c5adf3 Switch to raw_ostream. 
llvm-svn: 76943
 2009-07-24 04:01:01 +00:00
Reid Kleckner
5a7816053e Re-committing changes from r76825 to BumpPtrAllocator with a fix and tests for 
an off-by-one error.

llvm-svn: 76891
 2009-07-23 18:34:13 +00:00
Reid Kleckner
6f9bf7f028 Reverting r76825 and r76828, since they caused clang runtime errors and some build failure involving memset. 
llvm-svn: 76838
 2009-07-23 01:40:54 +00:00
Zhongxing Xu
cd7c9007d1 add header for 'memset'. 
llvm-svn: 76837
 2009-07-23 01:38:47 +00:00
Reid Kleckner
4c892c05ec Parameterize the BumpPtrAllocator over a slab allocator. It defaults to using 
malloc, so there should be no functional changes to other code.

These changes are necessary since I have plans to use this allocator in the JIT
memory manager, and it needs a special allocator.

I also added some tests which helped me pinpoint some bugs.

llvm-svn: 76825
 2009-07-23 00:30:41 +00:00
Dan Gohman
9653b21dc2 Fold the useful features of alist and alist_node into ilist, and 
a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.

llvm-svn: 54146
 2008-07-28 21:51:04 +00:00
Dan Gohman
60e964b34c Add some basic Pool-allocation infrastructure. This adds a Recycler class, 
for handling bookkeeping for deleted objects, as well as the alist class
template, for keeping lists of objects allocated from Recyclers, and some
related utilities.

llvm-svn: 53210
 2008-07-07 22:58:06 +00:00
Evan Cheng
d9353009b7 Fix more -Wshorten-64-to-32 warnings. 
llvm-svn: 50659
 2008-05-05 18:30:58 +00:00
Dan Gohman
e921f90c15 Fix a pointer-arithmetic bug that caused 64-bit host pointer values to 
be truncated to 32 bits. This fixes the recent Benchmarks/McCat/09-vor
regression on x86-64, among other things.

llvm-svn: 50372
 2008-04-28 20:25:15 +00:00
Ted Kremenek
f1304a3762 Bug fix in BumpPtrAllocator: don't assume that all objects have the same alignment. "Bump" of the pointer for the next allocated object to be of the specified alignment. 
llvm-svn: 50362
 2008-04-28 17:58:07 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Evan Cheng
e6c68e7668 Smarter Reset(). Instead of deallocating all memory regions and reallocate the 
first region, just deallocate all but the last region in the list.

llvm-svn: 41782
 2007-09-08 00:02:17 +00:00
Evan Cheng
5977c55f5d Added Reset() to free all allocated memory regions and reset state to be the same as right after ctor. 
llvm-svn: 41728
 2007-09-05 21:41:34 +00:00
Chris Lattner
042d3195c9 Avoid TBAA issue. 
llvm-svn: 34539
 2007-02-23 22:31:24 +00:00
Bill Wendling
fe0af72bc4 Don't use <sstream> in Streams.h but <iosfwd> instead. 
llvm-svn: 32340
 2006-12-07 23:41:45 +00:00
Bill Wendling
a3246c4272 Changed llvm_ostream et all to OStream. llvm_cerr, llvm_cout, llvm_null, are 
now cerr, cout, and NullStream resp.

llvm-svn: 32298
 2006-12-07 01:30:32 +00:00
Bill Wendling
d933b6630c Removed #include <iostream> and replace with llvm_* streams. 
llvm-svn: 31927
 2006-11-26 10:52:51 +00:00
John Criswell
335eb0232a Include llvm/Support/DataTypes.h to define intptr_t. 
This fixes the build on OpenBSD and potentially other systems.

llvm-svn: 31550
 2006-11-08 15:04:35 +00:00
Chris Lattner
6a498a7658 Add a new llvm::Allocator abstraction, which will be used by a container 
I'm about to add.  This is similar to, but necessarily different than, the
STL allocator class.

llvm-svn: 31285
 2006-10-29 22:08:03 +00:00